1. The separation of Dennstaedtia from Dicksonia, and the 

 breaking up of the latter genus into three. Our own species of 

 Dennstaedtin, too long held as a Dicksonia, is separated from that 

 genus not only generically but family-wise. 



2. The separation of our two species hitherto combined under 

 Onoclea into two genera, certainly as distinct genera as were ever 

 created ! 



3. The breaking up of the aspidioid forms into several genera. 

 While this has not always been as thorough as might have been 

 wished, it is a good beginning. Of course the selection of generic 

 names was bound to be unfortunate, since the work is presumably 

 based on the absurd and illogical fifty year system. Personally I 

 am loth to see such genera as Phegopteris, Meniscium, Goniopteris, 

 and the like, swallowed up with Dryopteris, but I can admit the 

 presence of connecting forms, which is no more than we as evolu- 

 tionists must expect in genera as well as species. 



4. Altho American only in cultivation, the breaking up of Da- 

 vallia into many genera should be commended. The transference 

 of Nephrolepis to the Davallieae is also logical. 



5. The separation of Asplenium into several genera. Here 

 again the division could consistently be made still greater. 



6. The breaking up of the composite genus Gymnogramma 

 as hitherto understood. 



7. The removal of Notholaena (wrongly written Nothochlaena~] 

 to a position intermediate between Pellaea and Cheilanthes. 



8. The removal of Pellaea Stelleri to Cryptogromma, follow- 

 ing Prantl's lead. 



9. The breaking up of Pteris into several genera, of which 

 our Pteris aquilina becomes Pteridium. 



10. The division of Taenitis into several genera. 



11. The breaking up of Acrostichum as comprised under the 

 Hookerian (Kew) system into several genera, of which our species 

 properly remain under Acrostichum itself. 



These are some of the many favorable points in the Berlin sys- 

 tem. Among the questionable points we may note the following : 



1. The retention of Camptosorus and Scolopendriuni in one 

 genus as has always been maintained in the Kew system. 



2. The union of Lomaria and Blechnum. Despite the resem- 

 blance, there seems to us a real.difference. 



3. The joining of certain species of Notholaena like nivea and 

 tenera to Pellaea. Possibly a separation of each genus into two 



